SQL & PL/SQL :: Sybase To Oracle Conversion

I am converting sybase to oracle database. during the migration, i have small doubt in triggers.

sybase source

create trigger testss_dt
on test
for delete
as
if @@rowcount = 0
return
insert into test
select id from deleted
return

I have converted oracle code here

create or replace trigger testss_dt
before delete on test
for each row
begin
insert into test
values(:old.test);
end;

But i have ignores @@rowcount concepts in oracle. what @@rowcount indicates in trigger?